From patchwork Tue Oct 24 18:36:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Avichal Rakesh X-Patchwork-Id: 13435189 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C3FC43C0C for ; Tue, 24 Oct 2023 18:36:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="09WLSfof" Received: from mail-pg1-x549.google.com (mail-pg1-x549.google.com [IPv6:2607:f8b0:4864:20::549]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5F3B0A2 for ; Tue, 24 Oct 2023 11:36:15 -0700 (PDT) Received: by mail-pg1-x549.google.com with SMTP id 41be03b00d2f7-5b87150242cso3164455a12.0 for ; Tue, 24 Oct 2023 11:36:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1698172575; x=1698777375; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=Y4WZ1HmvUmacPvyIaR17cHvCpQJGXPJrdUyEy8+V7mI=; b=09WLSfofrd7WGFjn9ZyNZ84zvC2k/UnSEETZ+SZSRHKu8PDZ8FVndiHnZU359dB3eH 1KuT8iJOV2M4qoB3LO7GPsyXf+lkKCpErwhw1RA4njpyIO/jfAKR06jPjkRF2E/7T2EF 90CZp1IUk1JnyT58p02VKJ5l2i6SY9P+ZkTTUIythZCgy5DIsJqDlur2fNO52rtt1rxx jmoTKXONpSaI6a0QOKoPsV7uFXnHTOsagJa1C8WsD4pMAhCzKr0PpzqGuMwOiI9grbdh U6zAXk7W1l6a6KQvL6nCqE78hIw5R4nyUB5HmHWtbOHAGDjphwCpCMY58uMvrAv8KrTA HjzQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698172575; x=1698777375; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Y4WZ1HmvUmacPvyIaR17cHvCpQJGXPJrdUyEy8+V7mI=; b=iOZqSECGuY0Oi8jpVUhsttNHTz8ogoo5f7HgLZzgqzFlA3b0pOZ91m6TfD4RkD78Eq km/jXL6Q1GVefIyJL+wyZwWomtWZ9DnFEYhXanp5f4oM428AGt0fJsioQBUnzZZyiDIo Q6/TEavyVVK+c01wCDyPhTYDvdBPE5mINSm7Ku/3N8sV6MSeV27HrasUygtRyE9oIIX9 64ZV57XTSRqkHS5eNty9zOcx2eYLWSwi7Qp1ddMaOyav96VIQKOpooKNuV2YOa/YbkpW ZGCA5I17EwtFBNgxZD0qtxbYEaEOSHRhWJlkDWxlDhGI7icQNbW2LF2xk8YZf8rBVj8Z fhIw== X-Gm-Message-State: AOJu0YzDZ2bLPjwjkNVP98d5WWGNb3wLUcnS1G2mJUH3B0REzkG0GV/l Z3qwy/fVDRCySbwKqIqJgRRaYtjAWRdx X-Google-Smtp-Source: AGHT+IGXxUNdfMt15oKOdqw99Ssbcqp76I1WtEMrjR6oh8zum05Ei/D30LaPvRF6xr6VZvWoFY5p2afzDLIS X-Received: from hi-h2o-specialist.c.googlers.com ([fda3:e722:ac3:cc00:24:72f4:c0a8:3cef]) (user=arakesh job=sendgmr) by 2002:a05:6a02:68c:b0:589:86ae:2107 with SMTP id ca12-20020a056a02068c00b0058986ae2107mr299068pgb.9.1698172574872; Tue, 24 Oct 2023 11:36:14 -0700 (PDT) Date: Tue, 24 Oct 2023 11:36:04 -0700 In-Reply-To: <20231024183605.908253-1-arakesh@google.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20231019185319.2714000-1-arakesh@google.com> <20231024183605.908253-1-arakesh@google.com> X-Mailer: git-send-email 2.42.0.758.gaed0368e0e-goog Message-ID: <20231024183605.908253-3-arakesh@google.com> Subject: [PATCH v8 3/4] usb: gadget: uvc: move video disable logic to its own function From: Avichal Rakesh To: arakesh@google.com, dan.scally@ideasonboard.com, gregkh@linuxfoundation.org, laurent.pinchart@ideasonboard.com Cc: etalvala@google.com, jchowdhary@google.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, m.grzeschik@pengutronix.de This patch refactors the video disable logic in uvcg_video_enable into its own separate function 'uvcg_video_disable'. Suggested-by: Michael Grzeschik Signed-off-by: Avichal Rakesh --- v6: Introduced this patch to make the next one easier to review v6 -> v7: Add Suggested-by v7 -> v8: No change. Getting back in review queue drivers/usb/gadget/function/uvc_video.c | 37 +++++++++++++++---------- 1 file changed, 23 insertions(+), 14 deletions(-) -- 2.42.0.758.gaed0368e0e-goog diff --git a/drivers/usb/gadget/function/uvc_video.c b/drivers/usb/gadget/function/uvc_video.c index c180866c8e34..80b8eaea2d39 100644 --- a/drivers/usb/gadget/function/uvc_video.c +++ b/drivers/usb/gadget/function/uvc_video.c @@ -493,13 +493,33 @@ static void uvcg_video_pump(struct work_struct *work) return; } +/* + * Disable video stream + */ +static int +uvcg_video_disable(struct uvc_video *video) +{ + struct uvc_request *ureq; + + cancel_work_sync(&video->pump); + uvcg_queue_cancel(&video->queue, 0); + + list_for_each_entry(ureq, &video->ureqs, list) { + if (ureq->req) + usb_ep_dequeue(video->ep, ureq->req); + } + + uvc_video_free_requests(video); + uvcg_queue_enable(&video->queue, 0); + return 0; +} + /* * Enable or disable the video stream. */ int uvcg_video_enable(struct uvc_video *video, int enable) { int ret; - struct uvc_request *ureq; if (video->ep == NULL) { uvcg_info(&video->uvc->func, @@ -507,19 +527,8 @@ int uvcg_video_enable(struct uvc_video *video, int enable) return -ENODEV; } - if (!enable) { - cancel_work_sync(&video->pump); - uvcg_queue_cancel(&video->queue, 0); - - list_for_each_entry(ureq, &video->ureqs, list) { - if (ureq->req) - usb_ep_dequeue(video->ep, ureq->req); - } - - uvc_video_free_requests(video); - uvcg_queue_enable(&video->queue, 0); - return 0; - } + if (!enable) + return uvcg_video_disable(video); if ((ret = uvcg_queue_enable(&video->queue, 1)) < 0) return ret;